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(08年福州质检二)已知的展开式中,二项式系数和为,各项系数和
(08年福州质检二)已知的展开式中,二项式系数和为,各项系数和
(
08
年福州质检二)已知
的展开式中,二项式系数和为
,各项系数和为
,则
.
答案
答案:
2
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